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annotationNectar is sought eagerly by various insects — C.C. Sprengel, first saw that it is excretion in various parts & organs within flower & its vry general presence in highly organised plants (see Kurr) was of special use t plant by attrctng insects.— He erred in supposing that these visits were for self-fertilistion; though in many cases necessay for self-fertilistn «(a)» & for union of Dioicous plants— The real object as shown by many general considerations is to ensure occasional cross.— But how is it in thos flowers, as Papaver & [continues on 2nd fold] & Verbascum ( Kurr) no nectar, yet these genera naturally cross — I suspect pollen-searchers do th job — But there are some as grasses— conifers, on pollen of which insects do not seem to feed — here wind both unites dioicous & crosses th hermaphrodites —

annotation95. Amentaceae ‹mostly› «(except Salix knwn t be visited by Bees.)» no nectar. or Coniferae— Good «as showing use of nectar» in several cases as Gramineae Cyperaceae. & Coniferae where we see structure & pollen showng that wind is Agent Nonectar